參數(shù)資料
型號： A1302KUA-T
廠商： Allegro Microsystems Inc
文件頁數(shù)： 5/10頁
文件大?。?/td> 214K
描述： IC SENSOR HALL EFFECT 3-SIP
產(chǎn)品培訓模塊： Current Sensor
標準包裝： 4,000
傳感范圍： 0.85mV/G ~ 1.75mV/G
類型： 線性場傳感器
電源電壓： 4.5 V ~ 6 V
電流 - 電源： 11mA
電流 - 輸出（最大）： 10mA
輸出類型： 數(shù)字式，差分
工作溫度： -40°C ~ 125°C
封裝/外殼： 3-SIP
供應商設備封裝： 3-SIP
包裝： 散裝
產(chǎn)品目錄頁面： 1139 (CN2011-ZH PDF)
其它名稱： 620-1022
Continuous-Time Ratiometric
Linear Hall Effect Sensor ICs
A1301 and
A1302
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Characteristic Definitions
Quiescent Output Voltage. In the quiescent state (no sig-
nificant magnetic field: B = 0), the output, V
OUTQ
, equals one
half of the supply voltage, V
CC
, throughout the entire operating
ranges of V
CC
 and ambient temperature, T
A
. Due to internal
component tolerances and thermal considerations, there is a
tolerance on the quiescent output voltage, V
OUTQ
, which is
a function of both V
CC
 and T
A
. For purposes of specifica-
tion, the quiescent output voltage as a function of temperature,
V
OUTQ(T
A
)
, is defined as:
    
where Sens is in mV/G, and the result is the device equivalent
accuracy, in gauss (G), applicable over the entire operating tem-
perature range.
Sensitivity.  The presence of a south-polarity (+B) magnetic 
field, perpendicular to the branded face of the device package,
increases the output voltage, V
OUT
, in proportion to the magnetic
field applied, from V
OUTQ
 toward the V
CC
 rail. Conversely, the
application of a north polarity (B) magnetic field, in the same
orientation, proportionally decreases the output voltage from its
quiescent value. This proportionality is specified as the magnetic
sensitivity of the device and is defined as:
     
The stability of the device magnetic sensitivity as a function of
ambient temperature,  Sens
 (T
A
)
 (%) is defined as:
Ratiometric.  The A1301 and A1302 feature a ratiometric 
output. This means that the quiescent voltage output, V
OUTQ
,
and the magnetic sensitivity, Sens, are proportional to the supply
voltage, V
CC
.
The ratiometric change (%) in the quiescent voltage output is
defined as:
and the ratiometric change (%) in sensitivity is defined as:
 
Linearity and Symmetry.  The on-chip output stage is 
designed to provide linear output at a supply voltage of 5 V.
Although the application of very high magnetic fields does not
damage these devices, it does force their output into a nonlinear
region. Linearity in percent is measured and defined as:
 
and output symmetry as:
?SPAN class="pst A1302KUA-T_2172696_9">V
OUTQ(敜
?/DIV>
)
Sens
(25篊)
V
OUTQ(?/DIV>
?/DIV>
)
V
OUTQ(25篊)
 
=
(1)
2B
V
OUT(B)
V
OUT(+B)
Sens
 
=
?SPAN class="pst A1302KUA-T_2172696_9">Sens
(敜
?/DIV>
)
Sens
(?/DIV>
?/DIV>
)
Sens
(25篊)
Sens
(25篊)
 
=
?100%
(2)
(3)
V
CC
 
5 V
V
OUTQ(V
CC
)
V
OUTQ(5V)
?SPAN class="pst A1302KUA-T_2172696_9">V
OUTQ(擵)
=
?100%
(4)
V
CC
5 V
=
?100%
?SPAN class="pst A1302KUA-T_2172696_9">Sens
(擵)
Sens
(V
CC
)
Sens
(5V)
(5)
=
?100%
Lin+
2 (V
OUT(+B?
  V
VOUTQ
)
  
V
OUT(+B)
V
OUTQ
(6)
=
?100%
Lin
2(V
OUT(B?
 V
OUTQ
)
  
V
OUT(B)
V
OUTQ
(7)
  
=
?100%
Sym
V
OUT(+B)
V
OUTQ
 V
OUT(B)
V
OUTQ
(8)
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